US5588011A - Tuned viterbi detector and equalizer system - Google Patents
Tuned viterbi detector and equalizer system Download PDFInfo
- Publication number
- US5588011A US5588011A US08/596,927 US59692796A US5588011A US 5588011 A US5588011 A US 5588011A US 59692796 A US59692796 A US 59692796A US 5588011 A US5588011 A US 5588011A
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- United States
- Prior art keywords
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- viterbi
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- set forth
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/63—Joint error correction and other techniques
- H03M13/6331—Error control coding in combination with equalisation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/09—Digital recording
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
- H03M13/4107—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors implementing add, compare, select [ACS] operations
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6502—Reduction of hardware complexity or efficient processing
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- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Error Detection And Correction (AREA)
Abstract
Description
N=P-1,
TABLE 1 ______________________________________ Tap E.sub.n E.sub.1 E.sub.2 E.sub.3 ______________________________________Precision 6bits NA NA 6 bits ______________________________________
TABLE 2 __________________________________________________________________________ New State Plus Transition Plus Transition Metric Path Metric = Old State Metric Metric Metric (time = t + 2) (time = t + 2) (Source) (time = t) (time = t + 1) (time = t + 2) __________________________________________________________________________ SM 15 = lessor of PM 63= SM 15 +TM 31 +TM 31 or PM 31= SM 7 +TM 15 +TM 31 or PM 15= SM 3 +Tm 7 +TM 15 SM 14 = lessor of PM 62= SM 15 +TM 31 +TM 30 or PM 30= SM 7 +TM 15 +TM 30 or PM 14= SM 3 +TM 7 +TM 14 SM 12 = lessor of PM 60= SM 15 +TM 30 +TM 28 or PM 28= SM 7 +TM 14 +TM 28 or PM 12= SM 3 +TM 6 +TM 12 SM 9 = lessor of PM 57= SM 14 +TM 28 +TM 25 or PM 25= SM 6 +TM 12 +TM 25 SM 8 = lessor of PM 56= SM 14 +TM 28 +TM 24 or PM 24= SM 6 +TM 12 +TM 24 SM 7 = lessor of PM 39= SM 9 +TM 19 +TM 7 or PM 7= SM 1 +TM 3 +TM 7 SM 6 = lessor of PM 38= SM 9 +TM 19 +TM 6 or PM 6= SM 1 +TM 3 +TM 6 SM 3 = lessor of PM 51= SM 12 +TM 25 +TM 19 or PM 35= SM 8 +TM 17 +TM 3 or PM 3= SM 0 +TM 1 +TM 3 SM 1 = lessor of PM 49= SM 12 +TM 24 +TM 17 or PM 33= SM 8 +TM 16 +TM 1 or PM 1= SM 0 +TM 0 +TM 1 SM 0 = lessor of PM 48= MS 12 +TM 24 +TM 16 or PM 32= SM 8 +TM 16 +TM 0 or PM 0= SM 0 +TM 0 +TM 0 __________________________________________________________________________
TM.sub.i,t =|D.sub.t -R.sub.i |, where TM.sub.i,t is transition metric i at time t, D.sub.t is data sample at time t, and R.sub.i is transition reference i.
SM.sub.j,t+1 =the lesser of SM.sub.k,t +TM.sub.m,t+1 or SM.sub.l,t +TM.sub.n,t+1,
TABLE 3 __________________________________________________________________________ INPUT 15a BIT 14 = 0, BITS 0 - 13 FROM OLD BS 15, BITS 1 - 14 respectively INPUT 15b BIT 14 = 1, BITS 0 - 13 FROM OLD BS 7, BITS 1 - 14 respectively INPUT 14a BIT 14 = 0, BITS 0 - 13 FROM OLD BS 15, BITS 1 - 14 respectively INPUT 14b BIT 14 = 1, BITS 0 - 13 FROM OLD BS 7, BITS 1 - 14 respectively INPUT 12a BIT 14 = 0, BITS 0 - 13 FROM OLD BS 14, BITS 1 - 14 respectively INPUT 12b BIT 14 = 1, BITS 0 - 13 FROM OLD BS 6, BITS 1 - 14 resg)ectively INPUT 9 BIT 14 = 0, BITS 0 - 13 FROM OLD BS 12, BITS 1 - 14 respectively INPUT 8 BIT 14 = 0, BITS 0 - 13 FROM OLD BS 12, BITS 1 - 14 respectively INPUT 7 BIT 14 = 0, BITS 0 - 13 FROM OLD BS 3, BITS 1 - 14 rest)ectively INPUT 6 BIT 14 = 0, BITS 0 - 13 FROM OLD BS 3, BITS 1 - 14 reseectively INPUT 3a BIT 14 = 1, BITS 0 - 13 FROM OLD BS 9, BITS 1 - 14 respectively INPUT 3b BIT 14 = 0, BITS 0 - 13 FROM OLD BS 1, BITS 1 - 14 respectlvelv INPUT 1a BIT 14 = 1, BITS 0 - 13 FROM OLD BS 8, BITS 1 - 14 respectively INPUT 1b BIT 14 = 0, BITS 0 - 13 FROM OLD BS 0, BITS 1 - 14 respectiveiv INPUT 0a BIT 14 = 1, BITS 0 - 13 FROM OLD BS 8, BITS 1 - 14 respectively INPUT 0b BIT 14 = 0, BITS 0 - 13 FROM OLD BS 0, BITS 1 - 14 __________________________________________________________________________ respectively
Claims (37)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/596,927 US5588011A (en) | 1994-08-10 | 1996-02-05 | Tuned viterbi detector and equalizer system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US28847594A | 1994-08-10 | 1994-08-10 | |
US08/596,927 US5588011A (en) | 1994-08-10 | 1996-02-05 | Tuned viterbi detector and equalizer system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US28847594A Continuation | 1994-08-10 | 1994-08-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US5588011A true US5588011A (en) | 1996-12-24 |
Family
ID=23107263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/596,927 Expired - Lifetime US5588011A (en) | 1994-08-10 | 1996-02-05 | Tuned viterbi detector and equalizer system |
Country Status (3)
Country | Link |
---|---|
US (1) | US5588011A (en) |
AU (1) | AU3364295A (en) |
WO (1) | WO1996005593A1 (en) |
Cited By (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999008376A1 (en) * | 1997-08-11 | 1999-02-18 | Seagate Technology, Inc. | Static viterbi detector for channels utilizing a code having time varying constraints |
US6023492A (en) * | 1995-11-24 | 2000-02-08 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for conditionally combining bit metrics in a communication system |
WO2000017872A1 (en) * | 1998-09-18 | 2000-03-30 | Koninklijke Philips Electronics N.V. | Generation of amplitude levels for a partial response maximum likelihood (prml) bit detector |
US6046873A (en) * | 1994-09-20 | 2000-04-04 | Hitachi, Ltd. | Magnetic recording and reproducing apparatus including a viterbi detector having a variable reference amplitude value |
WO2000022620A1 (en) * | 1998-10-13 | 2000-04-20 | Matsushita Electric Industrial Co., Ltd. | Apparatus for processing a reproduced digital signal |
US6097769A (en) * | 1998-02-10 | 2000-08-01 | Lucent Technologies Inc. | Viterbi detector using path memory controlled by best state information |
US6104766A (en) * | 1995-09-18 | 2000-08-15 | International Business Machines Corporation | Noise predictive maximum likelihood (NPML) detection methods and apparatus based thereon |
US6124869A (en) * | 1998-05-20 | 2000-09-26 | Agilent Technologies | Method and apparatus for low cost set mapping |
US6198587B1 (en) * | 1995-07-28 | 2001-03-06 | Pioneer Electronic Corporation | Recording information reproducing apparatus for increasing an amplitude of a high frequency component of the reproduced signal |
US6201840B1 (en) | 1997-10-08 | 2001-03-13 | Seagate Technology, Inc. | Method and apparatus for detecting data in magnetic recording using decision feedback |
US6212664B1 (en) | 1998-04-15 | 2001-04-03 | Texas Instruments Incorporated | Method and system for estimating an input data sequence based on an output data sequence and hard disk drive incorporating same |
US6246653B1 (en) * | 1997-12-12 | 2001-06-12 | International Business Machines Corporation | Data slice circuit and data slice method |
US6353315B1 (en) | 1999-08-27 | 2002-03-05 | Maxtor Corporation | Method and apparatus for using the data interface of a disk drive to identify and characterize disk flaws |
US6393598B1 (en) * | 1995-04-20 | 2002-05-21 | Seagate Technology Llc | Branch metric compensation for digital sequence detection |
US6396878B1 (en) | 1997-02-28 | 2002-05-28 | Nokia Telecommunications Oy | Reception method and a receiver |
US6445754B1 (en) * | 1998-08-13 | 2002-09-03 | Nec Corporation | Playback data detecting device |
US6493162B1 (en) | 1997-12-05 | 2002-12-10 | Seagate Technology Llc | Frame synchronization for viterbi detector |
US6553541B1 (en) * | 1999-04-14 | 2003-04-22 | Texas Instruments Incorporated | Reduced-complexity sequence detection |
US6594098B1 (en) | 2000-09-12 | 2003-07-15 | Marvell International Ltd. | Acquistion timing loop for read channel |
US6600617B1 (en) | 2000-03-07 | 2003-07-29 | International Business Machines Corporation | Method and apparatus for adjusting digital filter taps based upon minimization of viterbi margin counts |
US20030189994A1 (en) * | 1998-11-06 | 2003-10-09 | Naftali Sommer | Method and apparatus for equalization and tracking of coded digital communications signals |
US6697976B1 (en) | 1999-07-30 | 2004-02-24 | Hitachi, Ltd. | Performance evaluation method, performance evaluation system, and information storage apparatus using same |
US6771442B2 (en) | 2001-06-29 | 2004-08-03 | Infineon Technologies Ag | Off-track interference emulator |
WO2005027120A1 (en) * | 2003-09-16 | 2005-03-24 | Samsung Electronics Co., Ltd. | Apparatus and method for measuring signal quality |
US20050122877A1 (en) * | 2003-12-05 | 2005-06-09 | Canon Kabushiki Kaisha | Information reproduction apparatus and method using maximum likelihood decoding |
KR100474819B1 (en) * | 1997-07-04 | 2005-07-01 | 삼성전자주식회사 | Method for detecting a signal and an apparatus thereof in a data recording/reproducing apparatus |
US6931585B1 (en) * | 2002-01-03 | 2005-08-16 | Marvell International Ltd. | Detection in the presence of media noise |
EP1587234A1 (en) * | 2004-04-14 | 2005-10-19 | Deutsche Thomson-Brandt Gmbh | Adaptive viterbi detector |
US20060050814A1 (en) * | 2004-09-03 | 2006-03-09 | Mediatek Inc. | Decoding apparatus and method of optical information reproducing system |
US20060061496A1 (en) * | 2004-09-20 | 2006-03-23 | Stein Anatoli B | Self-adjusting PRML receiver |
US20070044008A1 (en) * | 2002-04-15 | 2007-02-22 | Mediatek, Inc. | ACS circuit and Viterbi decoder with the circuit |
WO2007132398A2 (en) * | 2006-05-15 | 2007-11-22 | Koninklijke Philips Electronics N.V. | An optical disc reading apparatus and method therefore |
US7793020B1 (en) * | 2002-11-27 | 2010-09-07 | International Business Machines Corporation | Apparatus and method to read information from an information storage medium |
US7801253B1 (en) | 2005-10-19 | 2010-09-21 | Marvell International Ltd. | Nonlinear post-processors for channels with signal-dependent noise |
US20110110210A1 (en) * | 2009-11-10 | 2011-05-12 | Renesas Electronics Corporation | Information detection device and optical disc device |
US8201066B1 (en) | 2008-03-28 | 2012-06-12 | Western Digital Technologies, Inc. | Disk drive comprising a trellis detector having a read signal whitener in the ACS circuit |
US20140173387A1 (en) * | 2012-12-13 | 2014-06-19 | Samsung Electronics Co., Ltd. | Apparatus and method for detecting bit sequence robustly to change of dc offset in ook receiver |
US8947812B1 (en) | 2014-03-27 | 2015-02-03 | Western Digital Technologies, Inc. | Data storage device comprising equalizer filter and inter-track interference filter |
US9183877B1 (en) | 2015-03-20 | 2015-11-10 | Western Digital Technologies, Inc. | Data storage device comprising two-dimensional data dependent noise whitening filters for two-dimensional recording |
US20160352364A1 (en) * | 2009-10-01 | 2016-12-01 | Stmicroelectronics, Inc. | Max-log-map equivalence log likelihood ratio generation soft viterbi architecture system and method |
Citations (5)
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US5321559A (en) * | 1992-08-27 | 1994-06-14 | Quantum Corporation | Asynchronous peak detection of information embedded within PRML class IV sampling data detection channel |
US5327440A (en) * | 1991-10-15 | 1994-07-05 | International Business Machines Corporation | Viterbi trellis coding methods and apparatus for a direct access storage device |
US5331320A (en) * | 1991-11-21 | 1994-07-19 | International Business Machines Corporation | Coding method and apparatus using quaternary codes |
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1995
- 1995-08-10 WO PCT/US1995/010264 patent/WO1996005593A1/en active Application Filing
- 1995-08-10 AU AU33642/95A patent/AU3364295A/en not_active Abandoned
-
1996
- 1996-02-05 US US08/596,927 patent/US5588011A/en not_active Expired - Lifetime
Patent Citations (5)
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US5331320A (en) * | 1991-11-21 | 1994-07-19 | International Business Machines Corporation | Coding method and apparatus using quaternary codes |
US5321559A (en) * | 1992-08-27 | 1994-06-14 | Quantum Corporation | Asynchronous peak detection of information embedded within PRML class IV sampling data detection channel |
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Cited By (73)
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---|---|---|---|---|
US6175460B1 (en) | 1994-09-20 | 2001-01-16 | Hitachi, Ltd. | Magnetic recording and reproduction apparatus |
US6046873A (en) * | 1994-09-20 | 2000-04-04 | Hitachi, Ltd. | Magnetic recording and reproducing apparatus including a viterbi detector having a variable reference amplitude value |
US6496316B1 (en) | 1994-09-20 | 2002-12-17 | Hitachi, Ltd. | Magnetic recording and reproduction apparatus |
US6393598B1 (en) * | 1995-04-20 | 2002-05-21 | Seagate Technology Llc | Branch metric compensation for digital sequence detection |
US6198587B1 (en) * | 1995-07-28 | 2001-03-06 | Pioneer Electronic Corporation | Recording information reproducing apparatus for increasing an amplitude of a high frequency component of the reproduced signal |
US6104766A (en) * | 1995-09-18 | 2000-08-15 | International Business Machines Corporation | Noise predictive maximum likelihood (NPML) detection methods and apparatus based thereon |
US6023492A (en) * | 1995-11-24 | 2000-02-08 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for conditionally combining bit metrics in a communication system |
US6396878B1 (en) | 1997-02-28 | 2002-05-28 | Nokia Telecommunications Oy | Reception method and a receiver |
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GB2343819B (en) * | 1997-08-11 | 2002-09-11 | Seagate Technology | Static viterbi detector for channels utilizing a code having time varying constraints |
US6212661B1 (en) | 1997-08-11 | 2001-04-03 | Seagate Technology, Inc. | Static viterbi detector for channels utilizing a code having time varying constraints |
GB2343819A (en) * | 1997-08-11 | 2000-05-17 | Seagate Technology | Static viterbi detector for channels utilizing a code having time varying constraints |
WO1999008376A1 (en) * | 1997-08-11 | 1999-02-18 | Seagate Technology, Inc. | Static viterbi detector for channels utilizing a code having time varying constraints |
US6201840B1 (en) | 1997-10-08 | 2001-03-13 | Seagate Technology, Inc. | Method and apparatus for detecting data in magnetic recording using decision feedback |
US6493162B1 (en) | 1997-12-05 | 2002-12-10 | Seagate Technology Llc | Frame synchronization for viterbi detector |
US6246653B1 (en) * | 1997-12-12 | 2001-06-12 | International Business Machines Corporation | Data slice circuit and data slice method |
US6097769A (en) * | 1998-02-10 | 2000-08-01 | Lucent Technologies Inc. | Viterbi detector using path memory controlled by best state information |
US6212664B1 (en) | 1998-04-15 | 2001-04-03 | Texas Instruments Incorporated | Method and system for estimating an input data sequence based on an output data sequence and hard disk drive incorporating same |
US6124869A (en) * | 1998-05-20 | 2000-09-26 | Agilent Technologies | Method and apparatus for low cost set mapping |
US6445754B1 (en) * | 1998-08-13 | 2002-09-03 | Nec Corporation | Playback data detecting device |
US6587520B1 (en) | 1998-09-18 | 2003-07-01 | Koninklijke Philips Electronics N.V. | Generation of amplitude levels for a partial response maximum likelihood (PRML) bit detector |
WO2000017872A1 (en) * | 1998-09-18 | 2000-03-30 | Koninklijke Philips Electronics N.V. | Generation of amplitude levels for a partial response maximum likelihood (prml) bit detector |
US7058142B2 (en) | 1998-09-18 | 2006-06-06 | Koninklijke Philips Electronics N.V. | Generation of amplitude levels for a partial response maximum likelihood (PRML) bit detector |
US6836511B1 (en) | 1998-10-13 | 2004-12-28 | Matsushita Electric Industrial Co., Ltd. | Apparatus for processing a reproduced digital signal |
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US20030189994A1 (en) * | 1998-11-06 | 2003-10-09 | Naftali Sommer | Method and apparatus for equalization and tracking of coded digital communications signals |
US6775335B2 (en) * | 1998-11-06 | 2004-08-10 | Texas Instruments Incorporated | Method and apparatus for equalization and tracking of coded digital communications signals |
US6553541B1 (en) * | 1999-04-14 | 2003-04-22 | Texas Instruments Incorporated | Reduced-complexity sequence detection |
US6697976B1 (en) | 1999-07-30 | 2004-02-24 | Hitachi, Ltd. | Performance evaluation method, performance evaluation system, and information storage apparatus using same |
US6353315B1 (en) | 1999-08-27 | 2002-03-05 | Maxtor Corporation | Method and apparatus for using the data interface of a disk drive to identify and characterize disk flaws |
US6600617B1 (en) | 2000-03-07 | 2003-07-29 | International Business Machines Corporation | Method and apparatus for adjusting digital filter taps based upon minimization of viterbi margin counts |
US6801380B1 (en) | 2000-09-12 | 2004-10-05 | Marvell International Ltd. | Acquisition timing loop for read channel |
US6594098B1 (en) | 2000-09-12 | 2003-07-15 | Marvell International Ltd. | Acquistion timing loop for read channel |
US6771442B2 (en) | 2001-06-29 | 2004-08-03 | Infineon Technologies Ag | Off-track interference emulator |
US6931585B1 (en) * | 2002-01-03 | 2005-08-16 | Marvell International Ltd. | Detection in the presence of media noise |
US7917836B1 (en) | 2002-01-03 | 2011-03-29 | Marvell International Ltd. | Detection in the presence of media noise |
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US7581160B2 (en) * | 2002-04-15 | 2009-08-25 | Mediatek Inc. | ACS circuit and Viterbi decoder with the circuit |
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US8423692B2 (en) | 2002-11-27 | 2013-04-16 | International Business Machines Corporation | Apparatus and method to read information from an information storage medium |
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US7953911B2 (en) | 2002-11-27 | 2011-05-31 | International Business Machines Corporation | Apparatus and method to read information from an information storage medium |
US20100318867A1 (en) * | 2002-11-27 | 2010-12-16 | International Business Machines Corporation | Apparatus and method to read information from an information storage medium |
US20100318868A1 (en) * | 2002-11-27 | 2010-12-16 | International Business Machines Corporation | Apparatus and method to read information from an information storage medium |
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US20050083822A1 (en) * | 2003-09-16 | 2005-04-21 | Samsung Electronics Co., Ltd. | Apparatus and method for measuring signal quality |
WO2005027120A1 (en) * | 2003-09-16 | 2005-03-24 | Samsung Electronics Co., Ltd. | Apparatus and method for measuring signal quality |
US7952974B2 (en) | 2003-09-16 | 2011-05-31 | Samung Electronics Co., Ltd. | Apparatus and method for measuring signal quality |
US7441177B2 (en) * | 2003-12-05 | 2008-10-21 | Canon Kabushiki Kaisha | Information reproduction apparatus and method using maximum likelihood decoding |
US20050122877A1 (en) * | 2003-12-05 | 2005-06-09 | Canon Kabushiki Kaisha | Information reproduction apparatus and method using maximum likelihood decoding |
WO2005101714A1 (en) * | 2004-04-14 | 2005-10-27 | Thomson Licensing | Adaptive viterbi detector |
US20070201585A1 (en) * | 2004-04-14 | 2007-08-30 | Thomson Licensing | Adaptive Viterbi Detector |
EP1587234A1 (en) * | 2004-04-14 | 2005-10-19 | Deutsche Thomson-Brandt Gmbh | Adaptive viterbi detector |
US7480224B2 (en) | 2004-09-03 | 2009-01-20 | Mediatek Inc. | Decoding apparatus and method of optical information reproducing system |
US20060050814A1 (en) * | 2004-09-03 | 2006-03-09 | Mediatek Inc. | Decoding apparatus and method of optical information reproducing system |
US7158324B2 (en) | 2004-09-20 | 2007-01-02 | Guzik Technical Enterprises | Self-adjusting PRML receiver |
US20060061496A1 (en) * | 2004-09-20 | 2006-03-23 | Stein Anatoli B | Self-adjusting PRML receiver |
US20100322353A1 (en) * | 2005-10-19 | 2010-12-23 | Zining Wu | Nonlinear post-processors for channels with signal-dependent noise |
US7801253B1 (en) | 2005-10-19 | 2010-09-21 | Marvell International Ltd. | Nonlinear post-processors for channels with signal-dependent noise |
US8259872B2 (en) | 2005-10-19 | 2012-09-04 | Marvell International Ltd. | Nonlinear post-processors for channels with signal-dependent noise |
US20090257332A1 (en) * | 2006-05-15 | 2009-10-15 | Koninklijke Philips Electronics N.V. | optical disc reading apparatus and method therefore |
WO2007132398A2 (en) * | 2006-05-15 | 2007-11-22 | Koninklijke Philips Electronics N.V. | An optical disc reading apparatus and method therefore |
WO2007132398A3 (en) * | 2006-05-15 | 2008-02-21 | Koninkl Philips Electronics Nv | An optical disc reading apparatus and method therefore |
US8201066B1 (en) | 2008-03-28 | 2012-06-12 | Western Digital Technologies, Inc. | Disk drive comprising a trellis detector having a read signal whitener in the ACS circuit |
US20160352364A1 (en) * | 2009-10-01 | 2016-12-01 | Stmicroelectronics, Inc. | Max-log-map equivalence log likelihood ratio generation soft viterbi architecture system and method |
US20110110210A1 (en) * | 2009-11-10 | 2011-05-12 | Renesas Electronics Corporation | Information detection device and optical disc device |
US8165007B2 (en) * | 2009-11-10 | 2012-04-24 | Renesas Electronics Corporation | Information detection device and optical disc device |
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Also Published As
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WO1996005593A1 (en) | 1996-02-22 |
AU3364295A (en) | 1996-03-07 |
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